Question

The number of terms in the A.P. 2, 5, 8, …… , 59 is​

Answer 1

Answer:

Number of terms is 20

Step-by-step explanation:

a=2

d=3

a+(n-1) d= 59

2+(n-1)3=59

2+3n-3= 59

3n=59-2+3

3n= 60

n= 20

IS IT HELPFUL....

Answer 2

Answer:

The number of terms in the A.P. 2, 5, 8, …… , 59 is

a = 2

d = 5 - 2 or 8 - 5

= 3

an = 59

We know that

an = a+(n - 1) d

Put values of a, d and an

59 = 2 + ( n - 1 ) 3

59 - 2 = 3n - 3

57 +3 = 3n

60 = 3n

60/3 = n

20 = n

Therefore number of terms are 20

Hope it helps